Spinning-spindle.



-C. H. CHAPMAN.

SPINNING SPINDLE.

APPLICATION FILED AUG.25,1913.

Patented Oct. 31, 1916.

Z Julie/afar? 41 UNITED. STATES PATENT OFFICE.

CHARLESH. CHAPMAN, OF WINCHESTER. EASSACHUSE'ITJlS.

SPINNING-SPINDLE.

Application filed August 25, 1913.

To all whom it in 119 concern:

Be it known that I, CHARLES n. Urmr- MAN, a citizen of the United States, residing at Winchester, in the county of Middlesex Band State of Massachusetts, have invented a certain new and useful Improvement in SpinningSpindles, of which-the following is a full, clear, and exact description.

The present invention is in the nature of an improvement upon the inventions of my Letters Patent No. 811,485, dated January 15, 1907, and No. 875,503, dated December 31, 1907, and No. 1,072,573, dated September 9,1913.

Asin' the prior inventions referred to, so here the spindle is supported in a bolster which is provided with ball-bearings 1ts top and bottom, and these ball-bearings afford the active hearings in whichthe spindle turns. Differing from the prior inventions mentioned, the bolster case is coni nvention.

structed with an oil reservoir siurrounding the tubular upright portion of .the holster case, and is provided with a direct lubricatin'g receptacle through which the reservoir is supplied with oil. In addition the spring sleeve differs in its construction and arrangement from the said prior ii'iventions, and it is also constructed to provide an improved system of lubrication, These and other features, as hereinafter particularly ointed out and claimed, constitute the In the accompanying drawing, illustrating the invention, in the several figures of which 1 like parts are similarly designated-Figure spring sleeve detached. Fig. 3 is a top and,

'Fig. 4 is a bottom end View bf the sleeve 1 -is a longitudinal section of the parts assembled for use, with the spindle and bobbin broken out and the spring sleeve partly in elevation. Fig. 2 isan. elevation of the Fig. 5 is an elevation of the" spring sleeve turned a quarter way around from Fig. 2.

Specification 0t letters Patent.

Patented Oct. 31, 1916. Serial No. 786,454. 2

Fig. 12 is a plan view'of the bolster cup containingthe bolster balls. Fig. 13 is an elevation of a portion of the spindle, showing the lower end broken justabove the conical step end. 7

The bolster case 1 has the oil well 2, screw-tln'eads 3, nut 4, and base 5, and differs from the prior inventions in having the oil receptacle 6, upright 7, oil reservoir 8, and cover 9. I

The spindle 10has a cylindrical portion 11 to fit into the top of the bobbin 12, and the blade of the spindle tapers very slightly to a point below the cone 13, whence it tapers quite rapidly,and ends in an inverted cone 14, which, preferably, is hardened. The cone 13 turns upon the balls 15 in. the bolster cup 16, which surrounds the spindle and cone and is supported by the bolster 17. The cone, balls, cup, and upper portion of the bolster constitute a bolster ball-bearing for the spindle. L

The lower end of the bolster is supplied with an externally screwthreauled step 18, perforated vertically at 19, and provided with a. ball-race 20, within which are balls 21. Above the inverted cone 14 the spindle is provided with a ball-retaining collar 22. The conical end 14 of the spindle is stepped in the perforation 15), and bears and rotates upon the balls 21. The lower end of the bolster 17 is screwthreaded internally at 23, and the step 1.8 screwed thereinnnd thus rendered adjustable within the bolster 17.

The conical end 14, step 18, balls 21, collar 22and the lower portion of the bolster 17,

constitute a ball-bearing step for the spindle; and by virtue of the fact that the bolster also has at its top the described ballbearing, it is herein referred to as a-ballbearing bolster. That portion 24 of the bolster 17, adjacent to the cone 13, is flared to conform to said-cone. .Through its length the bolster is larger than, and consequently,

out of contact with the spindle. The bolster is supported within the tubuof the sleeve 25, the upper portion 26 of 'lar upright 7 of the bolster case 1, by means which is cylindrical, and a lower portie 2],

tapering and fitting the bolster with an easy slip fit at top and bottom, and loosely between. This sleeve 25 has its cyii'ndrical portion 26, shown in Figs. 2 and 5,"extend- BEST AVAILABLE COP.

ing to a little over a third of its length. The upright T of theholstcr case 1 counterhored at 2S as shown in Fig. l. slightly larger in diameter than the oil well 2, forming a shoulder -39. The cylindrical portion 26 of the sleeve is made to tit this counterhore with a force tit and to rest on the shoulder 25). An oil-hole lit in the sleeve comes in line with an oil-hole 231 in the holster case and admits ot the passage of oil from the reservoir. through the hole Ill in the sleeve to the. oil well 2. llelow the cylindrical portiou'2tl is a second c vlimlrical portion -32, extending down to the line 1353 and slightly smaller in diameter than the evliudriral portion 26 and fitting the oil well 2 with an easy slip tit vertically and without lateral movement. Below the line 33 and extending to the line 34 the tapered portion 27.

Ilxtendiug from the line H to the hot-tom of the sleeve is a c vlimlrical portion 35 considerably smaller in diameter than the oil well .2, which allows sutlicient lateral movement. The cylindrical portion 'and tapered portion 27 are slotted with a spiral slot 36 which forms these two sections of the sleeve into :1 st 'aight and tapered spiral spring, respectively.

In practice it has heen found diltieult to construe-ta spring sleeve with a proper vertiealresilieney, and at the same time maintain the proper late :11 yielding resistan'ce to prevent the spindle from taking on a slight vihratory movement when running with an unbalanced load, or in connection with an imperfect ring. The present construction. and mounti' r of the spring sleeve admits of limiting the tension of the lateral movement by varying the length of the cylindri- *;\1 portion 32 ot' the spring. and at the same time maintaining the desired vertical movement to enable the spindle to accommodate an unbalanced load which may he 'aused hy an imperfect hohhin in spindle.

The step 18. as shown in detail in Figs. 5). 1t), and 11. has a nmnher o'l notches or slots-3T, cut transversely across its lower end, and the holster 17 also has a t'ansverse slot 38 cut in it. and the spring sleeve '15 likewise has a transverse slot 39. which slots 38 and 39 are adapted to he alined to receive a vertically arranged lm-lti|igclip 40 adapted to engage one of the notches in the step when itis alined with the slot in the holster to prevent the adjustment of the step 'l'rom changing. and also these parts from turning under the rotation ot the spindle. iv making a numher ol' these notches in the step a very nice adjustment of the hearing with relation -to inc spindle may he securei'l. 'lhis locking-clip has its upper portion ot' a width to lit the here of the spring sleeve snugly. as shown h v dotted lines Fig. :2.

while its lower portion is in width the same as the outside diameter ot the spring sleeve.

sleeve and the whirl l3 and is slightly tlared at its upper end' lt. there being an open space between the spring sleeve and the cover 9. which latter is also out of contact with the whirl.

The whirl 4? is connected with the spindle by means of, a whirl hase 45 'which is provided with the llange it), which greatly strengthens the counterhore +7 in' the whirl base into which the whirl is forced, and also acts as a stop to prevent the spindle and holster from being pulled out of the holster case when dotting or piecing up ends, by striking against the end of the dotfer guard -l'S which is pivoted to the upwardlyextending cars 45). and swings on the pin 50, as shown by dotted lines in Fig. 1. The dotfer guard 48 is also provided with a stopple 51, which is loosely connected with the doffer guard and enters and .eloses the oil receptacle 6. through which the oil is supplied to the reservoir 8.

The. holster of the p sent invention (lifl'ers from the holsters oi Patent No. 1,072.,- 573 in the form and length of its cam-like lips 5:2. which extend helow the slot 38 cut across its hottom and form a V-shaped hottom on the holster. so that when the Y holster is placed in the supporting sleeve and drops. down into place. the lips 52 when they strike the locking-clip-ltl will. if the slot isnot in line with the locking-clip. more readily cause the holster to adjust itself with its slot in perl'ect alinement with the-'hicking clip. therehy requiring no elt'ort or attention on the part. ol the. operative "to aline the slot in the holster with the locking-clip.

Otherwise it' has all of the advantages of the prior construction.-

'lhe lower end of the holster is hored out- "up as tar as the slot 3H. extending to the screwtln'wuls .i. which enahles the.step to he pushed up into the holster and serves to ahuc the step and prevent cross-thread- I mg it. when screwing t. into the holster.

.\nother and very important feature in it the construction of the present holsteris the hole 529 in its upper c vlim lrical portion This hole 53 serves to relieve the upper pressure of oil in the holster carried lip hy the centri ugal -lorce ol" the spindle. and prevenls the oil from overllowing the top of the holster and heing thrown oll' hy the in place.

whirl. This hole registers with one of the holes 42 in the spring sleeve, and thus lets the oil out into the reservoir 8.

The whirl base &5 is applied to the spindle in any usual or approved manner, and is provided with a circular tapering groove 55 to receive the lower end 56 off the bobbin 12,

tion of bobbin, as it is adapted to any of the well-known forms of bobbin nowin' general use.

The parts of the invention are preferably assembled as f0llOWSZ-Tl16 ball-retaining collar 22 is forced on the spindle above its conical end M, and the cone 13 is forced down upon the spindle to the desired position. The bolster cup 16 is filled with the balls 15, and then applied to the spindle and of the bolsteris spun or set around the as shown at 57 in- Fig. 1, which the spindle to its desired position. The

balls 21. are then placed in the race-way 20' of the step 18 which is then screwed into the lower end ofthe bolster and adjusted untilt-he spindle runs freely without any lateral movement in its bearings; .The

spring sleeve 25. \Vltll ltS locking-clip 40, se-. 'curely attached in its lower end, is forced into the upright 7 of the bolster case 1, and.

held firml in place by its upper portion 26 with the oil-hole 30 in line with the oil-hole 31 in the bolster case, so that its lower cylindrical portion and the'tapered portion 27 ha-iig suspended in the oil-well 2, and out of'cont'act with the walls of the bolster case. The bottom of the oil well 2 is partially squared as shown at, 58, Fig. 1, to liinit the downward movement of the spring sleeve. The oil reservoir cover 9 is then forced in to the counterbore around the} upper edge of the oil reservoir 8 and cemented oil-tight The dofler guard 48 is secured in place with the stopple nected througlra hole in the doiler guard. The spindle and bolster are now placed in thespring sleeve in the bolster case by raising the dofter guard into the position shown bydotted lines'in Fig. 1. The doii'er guard then drops into place and overhangs the flange 46 of the whirl base. Inpractice it has been found desirable to allow a little upward movement of the spindle to permit the flange to strike a; slight blow against the dolle'r guard, so asto tend to loosen the bobbin, and in the present invention, to seat the stopple 51 tight in the oil receptacle 6,

to prevent the oil getting into the oil reservoir.

upper end of the bolster l7 and the upper 51 loosely con-,

locat'ng In actual practice it has been demonstrated that the present invention produces a superior quality of yarn, from 12 to 14 per cent. stronger than is produced from the sameroving with the ordinary journal bearing spindle, and also saves in'power enough to pay several times its initial cost. Y

I When in practical operation spindles are required to run from eight to ten thousand revolutions per minute, a spindle to be of any practical value must have means to carry an unbalanced load at the above speed.

In my present invention the band pull 'at or near the center of the cylindrical por tion 54 of the bolster, which is supported laterally in the upperend of the spring sleeve 25, and the tension of the band tends tohold these parts in perfect alinement with each other and no amount of tension of the band will deflect the spindle out of a perpendicular position. The lower end of the bolster being supported vertically by the locking-clip in the lower end otthe spring sleeve, admits of both a vertical and lateral movement of the spindle and bolster. \Vhen an unbalancedload'is placed upon the spindle, or whenthe spindle is slightly imperfect, the greater part of the load, being above the band" pull, predominates over the lower and short end of the spindle, and the Another important feature in carrying an unbalanced load, is to keep a. perfect adjustment of the lower end of the spindle in the step bearing, .and this is accomplished by: the present invention, inasmuch as'the tension caused by the band-pull acts to force.

the step beaning into perfect adjustment on account of the contact of the balls 15 on the downward and outward taper of the cone 13'.

The lubrication is another important feature in my present invention The oil-hole 53 in the bolster supplies a. means of escape for the oil when the'bolster is overloaded with oil. VVere it not for such a means of escape of the oil, the bolster would be overflow'cd and the oil would soon be all thrown out K t-the bolster case. The provision in the spring sleeve of the holes 42 on opposite sides and located at right angles to the locking-clip asshown in Figs. 2 and 3., and above the level of the oil in the reservoir 8 and theipper end of the upright 7, and the ot' the hole 53 in the bolster-at right angles to the transverse slot 38, insures the coming of the hole 53 into line with one of the holes 42 on one side or the other, when the parts are assembled.

When the spindle is in. operation, a constant' circulation of oil is passing up around the spindleand out through the hole 53 into the oil reservoir 8, and from there back into the bolster through the oilhole 31, as bespring sleevetakes on the gyration and the fore described. By the present construction it is possible to keep a much larger supply of oil in the bolster use and prevent it from being wasted.

The spindle, whirl, cone, and collar are supported and revolve in the bolster bearing and in the step bearing, having no other support or contact.

It is to be distinctly understood that I do notlimitmy invention to the specific form of construction shown and described, since the details of construction may be modified without departing from the spirit of my invention, and, moreover, the invention is applicable to a bolste and step bearing of the ordinary journal type.

'hat I claim is:-

1. A spinning spindle, having an extension spring sleeve, and a bolster ease havin an oil well in which the sleeve is suspended and capable of vertical and lateral movement therein below its point. of suspension, said sleeve havingpa cylindrical portion by which it is suspendeilfasubjacent cylindrical portion ot'less diameter than the SI1S])(llSl()ll mfilOn fltapering port-ion next to the subjacent cylfiidrical portion and these two portions of resilient construction, and a bottom cylindrical portion of the same diameter as the smallest diameter of the tapering portion.

2. A spindle, a'bolster having a ball-bearin; at its top and a ball-bearingstep at its bottom to support said spindle, and a suspended sleeve in which said bolster is supported and capable of moving both laterally and vertically with the spindle. and constructed to limit lateral movement of part of the sleeve without changing the vertical resiliency of the said sleeve.

3. A bolstercase provided with an oil well, an upright portion, a spring sleeve mounted in the said upright portion, an oil reservoir surrounding the upright portion and provided with a passage for the oil to the oil well, a cover adapted to cover the oil reservoir and extending up around the upper. end' of the spring sleeve, :1 spindle and bolster mounted and supported within the said spring sleeve, a sleeve whirl, and a whirl base counter-bored to receive said sleeve whirl, said whirl surrounding the bolster bearing and the upwardly extending portion of the oil reservoir cover and out of contact with the said cover.

4. A spindle, a bolster case having an uprightportion in its base, a bolster provided with a ball-bearing at its top and a ballbearing step at its bottom to receive said spindle, a spring sleeve supported by the upright portion of the bolster case, in which sleeve the said spindle and bolster are mounted to have both vertical and lateral movement. and an oil reservoir surrounding the upright portion and provided with a cover, said ball-bearing in the top of the bolster extending above the cover of the oil reservoir, and said bolster having an opening located at a point below the cover of the reservoir and above the upright portion and the level of the oil in the reservoir to regulate the upward flow of the oil in "the bolster.

In testimony whereof I have hereunto set my hand this 20th day of August, A.-

CHARL is H. CHAPMAN. \Vitnesscs:

()smn E. S'rnvnxs, Fin-1n ll. CHAPMAN. 

